Anti-deflection alarm system used in continuous vertical annealing oven
A technology of a vertical annealing furnace and an alarm system, applied in the field of steel rolling, can solve the problems such as the failure of timely detection of steel buckling.
Active Publication Date: 2017-01-25
SHOUGANG JINGTANG IRON & STEEL CO LTD
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[0003] The present invention provides an anti-bending alarm system applied in a continuous vertical annealing furnace to solve the technical problem that cannot be detected in time when the strip steel is bending in the prior art
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[0073] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0074] In an embodiment of the present invention, an anti-bending alarm system applied in a continuous vertical annealing furnace is provided.
[0075] In practical application, the production steps of iron and steel products are: through consistent ironmaking, steelmaking, hot rolling, and cold rolling, the product size required by the user is produced. The product specification range is:
[0076] Tin-plated substrate: thickness specification 0.15≤h≤0.55mm, width specification 730≤w≤1280mm;
[0077] Galvanized and annealed coils for home appliance panels, automotive panels, etc.: thickness specification 0.25≤h≤3mm, width specification 750≤w≤2080mm.
[0078] Annealing furnace production...
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Abstract
This invention disclose a kind of anti-deflection alarm system used in continuous vertical annealing oven. It includes tension alarm module including tension modification protection module, used to identify whether annealing oven meets the first permanent condition or not, whether annealing oven meets the first initial condition. When annealing oven meets the first permanent and initial conditions, the alarm will be triggered. The differential temperature alarm module is used for the temperature difference of plate and area, the anti-deflection equipment is used to monitor and control cold state deflection limit specification, the steel belt transition alarm module is used to specification transition alarm, temperature transition alarm and hot roller alarm during oven starting, the speed alarm module is used to identify whether annealing oven meets the second permanent condition: production mode class 2, or present oven speed is maintained continuously for 2h >= Alpha, and whether annealing oven meets the second initial condition: the present oven speed < minimum operation speed; when annealing oven meet the second permanent condition and initial condition at the same time, the alarm will be triggered.
Description
technical field [0001] The present application relates to the technical field of steel rolling, in particular to an anti-bending alarm system applied in a continuous vertical annealing furnace. Background technique [0002] After the chilled coil is heated to a certain temperature in the annealing furnace, the yield strength decreases sharply. For example, after the DC03 brand strip is heated from 200°C to 800°C, the yield strength Rp0.2 decreases from 493MPa to 14MPa. At this time, the strip steel in the furnace is easy to receive the temperature difference and the transverse compressive stress generated by the tension in the width direction, resulting in buckling deformation, see figure 1 . Often when the tension or temperature in the furnace is abnormal, the operator cannot find out in time that the strip is bent and broken in the furnace. Among the 68 unplanned openings of the Shougang Jingtang Cold Rolling Department from 2009 to 2015, 30 unplanned openings were cause...
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IPC IPC(8): C21D9/56C21D11/00
CPCC21D9/56C21D9/564C21D11/00
Inventor 任伟超郑晓飞孙健新杨枕刘宗发李冠雄刘顺明王道金陈文武韩帮才余涛郑海燕王立朋韩志钢罗新龙胡建军楚怀远田才王晓广周玉锋张学范
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD